At the time the article was created Donovan Jacobs had no recorded disclosures.
View Donovan Jacobs's current disclosuresAt the time the article was last revised Andrew Murphy had no recorded disclosures.
View Andrew Murphy's current disclosuresThe doughnut sign can be appreciated on the lateral chest radiograph of patients with mediastinal adenopathy, most commonly seen in paediatric patients with pulmonary tuberculosis infection1.
The sign is made up of precarinal, subcarinal and retrocarinal lymph nodes which surround the radiolucent trachea and upper lobe bronchi, giving the doughnut-like appearance.
ADVERTISEMENT: Supporters see fewer/no ads
Updating… Please wait.
Unable to process the form. Check for errors and try again.
Thank you for updating your details.
